Parallel venation: nta ntawm cov qauv ntawm cov nroj tsuag

Parallel venation ntawm nplooj nyob rau hauv cov xwm feem ntau txaus thiab yog ib qho tseem ceeb feature ntawm tsob nroj cais. Rau ib txhia kab mob, nws yog raug li cas thiab yog nws tus yam ntxwv, peb yuav xav txog nyob rau hauv peb hnub no tus tsab xov xwm.

Yuav ua li cas yog venation

Daim ntawv teev cov - qhov tseem ceeb tshaj hloov ntawm cov nroj tsuag, ua tseem ceeb heev zog. Thawj thiab foremost yog lub realization ntawm tus txheej txheem ntawm transpiration thiab photosynthesis. Tshuaj uas yog tsim nyob rau tib lub sij hawm, txav mus rau ib tug tshwj xeeb daim ntawv system. Nws yog ib tug sau ntawm cov ntsiab ntawm cov conductive ntaub los yog, ntau tsuas, cov leeg. Lawv yuav tsum tau teem nyob rau hauv ib tug txawv kev txiav txim. Qhov xwm ntawm lawv qhov chaw nyob thiab hu ua veining.

hom venation

Muaj peb hom venation. Qhov no mesh, arc thiab thaum uas tig mus. Thiab lawm yeej tsis muaj ib tug ntshiab kev sib raug zoo ntawm tus duab ntawm lub nplooj hniav thiab qhov xwm ntawm qhov chaw ntawm lub cev. Xav txog cov piv txwv ntawm no dependence rau ib tug ob peb ntau cov nroj tsuag. Piv txwv li, palchastye maple nplooj tau reticulate venation, nyob rau hauv uas lub ntsiab vascular lub nras uas fiber stands kom meej meej. Depart los ntawm nws stems lub thib ob thiab thib peb kev txiav txim. Cov tib kho yog raug rau lws suav, txiv duaj, rose, kua, taum, qos yaj ywm, txiv lws suav, zaub qhwv thiab ntau lwm dicots. Nyob rau hauv lub nplooj ntawm cov linear tsim ib tug txawv qauv ntawm cov conduction system. Yog hais tias lub ntsiab hlab ntsha yog tsis faib, thiab cov uas nyob ib sab txav deb ntawm lub hauv paus ntawv los ntawm ib tug taw tes ntawm lub arcs, thiab ces kev cob cog rua rau ntawm nws sab saum toj, qhov kev piv txwv ntawm lub thib ob hom. Nws yog raug, piv txwv li, Lily ntawm cov hav thiab plantain. Parallel veining kuj tshwm sim nyob rau hauv linear nplooj.

Parallel venation ntawv

Twb los ntawm lub npe nws yog tseeb hais tias nyob rau hauv cov leeg ntawm lub nplooj raug teem thaum uas tig mus rau txhua lwm yam. Lawv cuag los ntawm cov ntug ntawm lub phaj nrog nws. Parallel venation yog cov yam ntxwv ntawm monocots. Cov no muaj xws ntau cov tswv cuab ntawm tsev neeg ntawm cereals, dos thiab Lily. Ntug ntawm daim nplooj tuaj tsis dismembered, thiab yog kiag li tiaj tus, ua rau nws ua tau rau thaum uas tig mus kev kho ntawm cov leeg.

Nroj tsuag nrog thaum uas tig mus venation

Tsis tas li ntawd thaum uas tig mus venation rau monocot cov yam ntxwv yog cov xub ntiag ntawm ib embryo nrog ib tug cotyledon, fibrous paus system, cov tsis muaj cambial cov ntaub so ntswg nyob rau hauv kav, paum nplooj. Cov no systematic units feem ntau nyom, yam tsawg kawg - lov tas vau.

Ntawm kev nyiaj txiag tseem ceeb ntawm lawv yog nyom los yog Bluegrass nroj tsuag. Pob kws, nplej, rye, barley, mov - tag nrho cov paub cereals. Rooj zaum nyom, Kentucky Bluegrass, Timaute, brome yog raug steppe nroj tsuag uas yog zoo kawg nkaus yoog mus rau tej yam kev mob ntawm me ntsis daus txias winters thiab kub qhuav lub caij ntuj sov. Cov cereals, thiab ntau nqi fodder qoob loo.

Nyob rau hauv lub Lily, uas yog tseem ceeb zoo nkauj thiab zib ntab nroj tsuag, tseem muaj cov neeg sawv cev ntawm thaum uas tig mus veining. Lawv muaj ib tug tseem ceeb kev hloov kho ntawm lub underground khiav - dos. Siv nws cov ntaub ntawv vegetatively propagated nroj tsuag thiab pauv mus rau qhuav thiab khov sij hawm.

Lug faib nyob rau hauv qhov thiab dos. Feem ntau cov feem ntau, lawv loj hlob nyob rau hauv lub meadows thiab hav zoov clearings. Tsaug rau qhov muag teev, lawv yuav tau nyob ua ib ke nyob rau hauv tej yam kev mob ntawm steppes, savannas thiab deserts.

Yog li ntawd thaum uas tig veining raug ntawm cov chav kawm ntawv cov neeg sawv cev ntawm monocots. Qhov no hom ntawm kev kho ntawm daim ntawv ntawm conductive ntsiab sawv cev los ntawm fibrovascular bundles uas yog txheej txheem raws phaj linear nplooj.